Ok, now don't hate me too much! I invented the atomic part only in this last week.
Atomic would be like the atomic pushup. Power means involving some plyometrics (I saw this one in a book on plyometrics, but with someone holding your ankles instead of the TRX)
Start like in the suspended incline press (upside-down, arms extended, one foot in the TRX single handle mode). Pull your legs in like a crunch, then straighten them again (the atomic part). Go down, now on your way up do it fast enough that your hands leave the ground, even my a millimeter or two (that's the power bit).
I found it hard to stay upright after the power part, but the inverse crunches were easy.
The atomic matrix may be possible, but I couldn't stay balanced while doing any inverse oblique crunches. Maybe with practice.
So do you like it? Or am I just a little too crazy?